closed-circuit television(redirected from Closed-circuit security)
Also found in: Dictionary, Thesaurus.
a television system in which signals are transmitted from a television camera to the receivers by cables or telephone links forming a closed circuit, as used in security systems, etc.
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
closed-circuit television[¦klōzd ¦sər·kət ′tel·ə‚vizh·ən]
Any application of television that does not involve broadcasting for public viewing; the programs can be seen only on specified receivers connected to the television camera by circuits, which include microwave relays and coaxial cables. Abbreviated CCTV.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.